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design of an anastigmatic three-mirror telescope using freeform surfaces 11

Design of an anastigmatic three-mirror telescope using freef...

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conference on current developments in Lens design and optical engineering XXI

作者： Alvarado-Martinez, J. J. Granados-Agustin, F. S. Vazquez-y Montiel, S. Cornejo-Rodriguez, A. A. INAOE Luis Enrique Erro 1 Sta Maria Tonanzintla Cholula Pue Mexico UIEPA Los Ilanos Kilometro 1 San Andres Tlayehualanci Ahuacatlan Pue Mexico

ISBN: (数字)9781510637719

ISBN: (纸本)9781510637719

This paper proposes the design of an anastigmatic three-mirror telescope using freeform surfaces for the correction of spherical aberration, coma, astigmatism, and field curvature, allowing a wide field of view (FOV) and high resolution. For the structure of this telescope, it is proposed to use only two optical elements where the primary and tertiary mirrors are integrated into an only optical element and the secondary mirror in the other, thus achieving a considerable reduction in the difficulty of alignment and assembly. To achieve a high performance of the telescope, the system was decentered (off-axis design), avoiding the loss of energy due to the obscuration of the M-2 in the on-axis system. In addition, to solve the difficult access to the focus.

关键词： optical design three-mirror system freeform on-axis system off-axis system

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Analytic free-form lens design for imaging applications with high aspect ratio

Analytic free-form lens design for imaging applications with...

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conference on current developments in Lens design and optical engineering XIII

作者： Duerr, Fabian Benitez, Pablo Minano, Juan Carlos Meuret, Youri Thienpont, Hugo Vrije Univ Brussel Fac Engn Sci Brussels Photon Team B PHOT TONA FirW B-1050 Brussels Belgium

ISBN: (纸本)9780819492036

A new three-dimensional analytic optics design method is presented that enables the coupling of three ray sets with only two free-form lens surfaces. Closely related to the Simultaneous Multiple Surface method in three dimensions (SMS3D), it is derived directly from Fermat's principle, leading to multiple sets of functional differential equations. The general solution of these equations makes it possible to calculate more than 80 coefficients for each implicit surface function. Ray tracing simulations of these free-form lenses demonstrate superior imaging performance for applications with high aspect ratio, compared to conventional rotational symmetric systems.

关键词： Mathematical methods in physics geometric optical design and lens design free-form optics

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Dispersion sensitivity of large scale axial gradient index glass for spherochromat doublets

Dispersion sensitivity of large scale axial gradient index g...

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8th conference on current developments in optical design and optical engineering

作者： Manhart, PK Hunter, BV Blankenbecler, R Raytheon Missile Syst Co Tucson AZ 85734 USA

ISBN: (纸本)0819432652

Bi-AGRIN cemented doublets, super corrected for zero axial color, spherical aberration and sphero-chromatism (we will call them spherochromats) can show polychromatic performance in the range of 0.004 waves PV or better at the red and blue wavelengths for speeds up to F/2, (0.06 waves PV of F/1.5). These doublets are comprised of two elements of axial gradient index glass. The crown and flint elements are each designed with separate and distinct gradient glass lines, giving each element an axial gradient in refractive index and dispersion(1). This paper examines one design and its performance sensitivity to dispersion modeling via the Buchdahl and Sellmeier dispersion equations.

关键词： optical design gradient index gradient dispersion macro AGRIN large scale AGRIN GRADIUM glass lines spherochromat high performance axial color sphero-chromatism

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optical design of a single freeform lens for both counter-beam and pro-beam in LED tunnel lighting 25

Optical design of a single freeform lens for both counter-be...

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conference on current developments in Lens design and optical engineering XXV

作者： Syu, Jhih-Ling Lee, Tsung-Xian Tsai, Cheng-Hung Ma, Shih-Hsin Feng Chia Univ Dept Photon Taichung Taiwan Natl Taiwan Univ Sci & Technol Grad Inst Color & Illuminat Technol Daan 106 Taiwan

ISBN: (纸本)9781510679221;9781510679238

A luminaire designed for tunnel lighting is proposed, featuring the ability to adjust the ratio between counter-beam and pro-beam lighting based on different contexts. This allows the luminaire to achieve the optimal lighting mode for the conditions within the tunnel at that time. When both side LEDs are activated, it operates in symmetric lighting mode. When a single-side LED is activated, it switches to either counter-beam or pro-beam lighting mode. The advantage of this luminaire lies in the use of a single freeform secondary lens and LEDs, making installation simpler. It ensures driver safety and is more energy-efficient than traditional tunnel lights.

关键词： optical design Tunnel Lighting Freeform Secondary lens Microstructure

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Methodology to design mobile-based camera lenses using freeform surfaces 22

Methodology to design mobile-based camera lenses using freef...

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conference on current developments in Lens design and optical engineering XXII

作者： Zhuang, Zhenfeng Dallaire, Xavier Parent, Jocelyn Roulet, Patrice Thibault, Simon Immervision Inc 2020 Robert Bourassa BlvdSuite 2320 Montreal PQ H2A 2A5 Canada Univ Laval Ctr Opt Photon & Laser Dept Phys Genie Phys & Opt 2375 Rue Terrasse Quebec City PQ G1V 0A6 Canada

ISBN: (数字)9781510644670

ISBN: (纸本)9781510644670

Freeform technology is one of the most promising solutions for enhancing the capability of aberration correction and improving performance of optical systems. Aiming to demonstrate the freedom and flexibility of optical system design, several challenging design examples using freeform surface are presented, including two wide-angle camera lenses adopting even and odd pedal polynomial formulations for symmetric optical surface description, and an anamorphic cinema lens employing non-rotationally symmetric surfaces for capturing a wider aspect ratio and offering a 1.33 x squeeze factor on a 4:3 sensor size. Methods and constraints for designing and optimizing the optical systems are discussed. The optical performances of these design examples are analyzed and the results verify the practicability and effectiveness of the proposed formulations and design strategies in the field of freeform imaging optical design.

关键词： Lens system design optical systems geometric optical design aspherics

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optical-SYSTEMS design FOR FOCAL-PLANE TESTING USING DIRECT WRITE SCENE GENERATION 4

OPTICAL-SYSTEMS DESIGN FOR FOCAL-PLANE TESTING USING DIRECT ...

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conference on current developments in optical design and optical engineering IV

作者： DOUB, CA CALSPAN CORP AEDC OPERATARNOLD AFBTN 37389

ISBN: (纸本)0819415871

Infrared Focal Plane Array (FPA) sensors are commonly tested using various means of scene generation. At the Arnold engineering Development Center a Direct Write Scene Generator (DWSG) is being developed. The DWSG projects the scene onto the focal plane array by scanning a rake of beams across the sensor. The rake consists of up to 256 synchronous beams generated by passing a single laser beam through an acousto-optic deflector (AOD). A complex radio frequency signal input into the AOD diffracts the laser beam into multiple beams. Each pixel of the focal plane is illuminated by one of the beams in the rake. The Direct Write Scene Generator is being designed to test a focal plane area as large as a 512 X 512 pixel array. Scan optics focus an expanded laser beam to a spot smaller than the focal plane pixel pitch over the entire test area. Several optical configurations and multiple AODs are needed to achieve the test requirements at various wavelengths. Some important considerations in the optical design are spot size, crosstalk, and background radiation.

关键词： Staring arrays Lens design Acousto-optics Distortion Scanners Sensors optical design Beam steering Diagnostics Laser sources

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Automated design and fabrication of ocular optics

Automated design and fabrication of ocular optics

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conference on current developments in Lens design and optical engineering IX

作者： Gutin, Mikhail Gutin, Olga Appl Sci Innovat Inc Troy NY 12180 USA

ISBN: (纸本)9780819472809

Automated computer-aided procedure for component selection, optical design, and optimization was developed and used to produce prototype ocular optics of a head-mounted display for biomedical imaging, with the field of view and resolution approaching those of normal human vision. The new display has the potential to dramatically increase the amount and fidelity of real-time visual information presented to the user. The selected approach was based on a tiled configuration and "optically stitched" virtual image, resulting in seamless imagery generated by multiple micro-displays. Several optical configurations were studied in the design stage, to arrive at the optimal optical layout. The automated procedure provided for extensive search of the best candidate stock components out of thousands of candidate lenses offered by different vendors. At each iteration, the candidate lens was "digitally inserted" in the optical layout, its position was optimized, and the achieved merit function characterizing the quality of the stitched image was stored, along with the design prescription. A few best designs were then closely evaluated in a traditional "manual" procedure. The design effort was followed by experimental demonstration and tests of a limited prototype optical system.

关键词： optical design lens design head mounted display HMD

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A Toolkit for Multiscale optical System Inverse-design 23

A Toolkit for Multiscale Optical System Inverse-Design

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conference on current developments in Lens design and optical engineering XXIII Part of SPIE Optics and Photonics conference

作者： Campbell, Sawyer D. Jenkins, Ronald P. Zerbe, Benjamin A. Whiting, Eric B. Balasubramanian, Manushanker Das, Arkaprovo Young, Jacob T. Werner, Douglas H. Werner, Pingjuan L. Penn State Univ Sch Elect Engn & Comp Sci University Pk PA 16802 USA

ISBN: (纸本)9781510654198;9781510654181

optical system design is undergoing a transformational change with the increases in computational horsepower, cutting-edge algorithmic developments, and the advent of new nanofabrication technologies. Among the most exciting advances in recent memory are optical metasurfaces, which are patterned surfaces commonly realized through nanofabrication that can imbue optical engineers with expanded degrees of design freedom due to their ability to exploit the generalized form of Snell's law. Through intelligent optimization and design, metasurfaces can be constructed which achieve arbitrary chromatic dispersion behaviors and unprecedented control over polarization that simply cannot be realized with conventional optical elements. However, designing high-performance metasurfaces requires the use of full-wave simulation tools and numerical optimization techniques which necessitate considerable computational resources. Moreover, while optical metasurfaces are moving towards millimeter and centimeter scale diameter lenses with advances in nanofabrication techniques, it is computationally infeasible to employ full-wave simulation tools directly to model optical systems that use such large size elements. Nevertheless, the size, weight, and power (SWaP) advantages afforded by optical metasurfaces make them a compelling choice for designers to consider in a number of applications, which are currently limited by bulky conventional optical solutions. Therefore, techniques that can rapidly model metasurfaces in conjunction with conventional optical elements such as lenses, mirrors, and prisms are highly desirable. In this presentation, we highlight a toolkit of custom solvers, design procedures, and powerful optimization algorithms that simplify and accelerate the development of hybrid optical systems with arbitrary combinations of conventional and metasurface elements.

关键词： optical design optimization inverse-design gradient-index lenses metasurfaces simulation multiscale

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Modeling diffractive optical elements in hybrid systems with the effect of the material dispersion

Modeling diffractive optical elements in hybrid systems with...

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conference on current developments in Lens design and optical engineering IX

作者： Zhang, Hu Liu, Hua Lu, Zhenwu Zhang, Hongxin Ni, Zhengguo Chinese Acad Sci State Key Lab Appl Opt Changchun Inst Opt Fine Mech & Phys Changchun 130033 Peoples R China Chinese Acad Sci Grad Sch Beijing 100039 Peoples R China Aviat Univ Air Force Changchun 130022 Peoples R China

ISBN: (纸本)9780819472809

The diffractive optical element (DOE) is always modeled as an ideal pure diffractive clement which neglects the refractive dispersion of the clement's material. In this paper, a new model of the diffractive optical element is proposed, in which the effect of the refractive dispersion of the DOE's material is considered. The new model is explained and compared with standard diffraction-order expansion with the help of a hybrid system example. The analytical results show that the new model has an important meaning for the exact analysis of the hybrid refractive-diffractive optical system.

关键词： Diffractive optical clement material dispersion hybrid optical systems optical design

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Linear precision inertial actuator built for low impact, in-situ installation on structures with vibration problems

Linear precision inertial actuator built for low impact, in-...

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conference on current developments in optical design and engineering viI

作者： Updike, CA Greeley, SW King, JA Planning Syst Inc Melbourne Controls Grp Melbourne FL USA

ISBN: (纸本)0819428841

In the process of designing a control actuator for a. vibration cancellation system demonstration on a large, precision optical testbed, it was discovered that the support struts on which the control actuators attach could not be disassembled. This led to the development of a Linear Precision ACTuator (LPACT) with a novel two piece design which could be clamped around the strut in-situ. The design requirements, LPACT characteristics, and LPACT test results are fully described and contrasted with other earlier LPACT designs. Cancellation system performance results are presented for a 3 tone disturbance case. Excellent results, on the order of 40 dB of attenuation per tone (down to the noise floor on two disturbances), are achieved using an Adaptive Neural Controller (ANC).

关键词： actuator design magnetic circuit active vibration cancellation tonal disturbances adaptive neural control

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